B. Groschel et al., ddC- and 3TC-bis(SATE) monophosphate prodrugs overcome cellular resistancemechanisms to HIV-1 associated with cytidine kinase deficiency, NUCLEOS NUC, 18(4-5), 1999, pp. 921-926
A 2',3'-dideoxycytidine (ddC)-resistant T-lymphoid eel line (MOLT-4/8(r)ddC
(250)), in which deoxycytidine kinase (dCK) gene-expression was decreased w
hen compared with parental cells, has been selected. Cytotoxic and antiretr
oviral activity of ddC and 3TC was significantly lower in MOLT-4/8(r)ddC(25
0) than in parental MOLT-4/8 cells. ddC- and 3TC-bis(SATE)phosphotriesters
completely overcame cellular resistance mechanisms and showed comparable bo
th cytotoxic and antiretroviral activity in parental and ddC-resistant cell
s.